Summary
Using Chinese Spring monosomics two procedures were applied to localize the gene Ch 1 for hybrid chlorosis. This gene is present in certain provenances of Triticum macha var. subletshchumicum. Though the evidence is not conclusive, chromosome 2A is most likely the carrier of the Ch 1 locus.
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References
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Hermsen, J.G.T., Waninge, J. Attempts to localize the gene Ch 1 for hybrid chlorosis in wheat. Euphytica 21, 204–208 (1972). https://doi.org/10.1007/BF00036760
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DOI: https://doi.org/10.1007/BF00036760